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Finding the Fourth Proportional to 489,823.28, 675,955.80 and 274,963.76

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Solution

The fourth proportional to 489,823.28, 675,955.80 and 274,963.76 is: 379,449.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,823.28 : 675,955.80 = 274,963.76 : x
  2. Step 2: Convert to fraction form
    489,823.28/675,955.80 = 274,963.76/x
  3. Step 3: Cross multiply
    489,823.28x = 675,955.80 × 274,963.76
  4. Step 4: Simplify right side
    489,823.28x = 185,863,348,361.81
  5. Step 5: Solve for x
    x = 185,863,348,361.81/489,823.28
  6. Step 6: Final answer
    x = 379,449.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.